been looking around the parts for sale areas and ebay and found some superchargers and more so turbo's, just curious and wondering what size turbo's would i need for a twin turbo set up to see any power gains? i'v basically worked out the size cam i want which is for FI and will do head work at same time with bottom end down the track or same time depending. iv seen a couple of t3-t4 turbo's on here and ebay with internal waistgates for around the $500-$900 mark, etc and they say there good for under 3 ltr but good for quick punchy power as a twin set up on 5ltr-6/6.2ltr engines, just curious to what size/s would be good with out having massive turbo's atm. also seen some slightly larger turbos that require external waistgates. i know this opens a whole can of worms to how much power, etc, but more want as an extra bit of induction atm and more on a budget so to speak as can do most of the install work myself, but don't have budget for a GENTT kit on top of cam install. Also this way so i can just upgrade turbos later. cheers, Ben.